A method and device for coordinating design of main line signal in tidal traffic state

Abstract

The invention discloses a coordinating design method and device for trunk line signals in tidal traffic state. The method of the invention first obtains relevant parameters of the target road section of the trunk line in tidal traffic state, and then takes the trunk line as the modeling object, constructs and solves to maximize the two directions of the trunk line The optimization model with weighted throughput as the goal maximizes the throughput of the main line by adjusting the length of the green light; then, taking each intersection as the modeling object, constructs and solves the optimization model with the goal of minimizing the average vehicle delay in the direction of high traffic volume, through Adjust the phase difference to minimize the average vehicle delay; then take the trunk line as the modeling object, construct and solve an optimization model aiming at maximizing the green wave bandwidth in the direction of low traffic volume, and maximize the green wave bandwidth by adjusting the phase scheme. By establishing and solving the above three optimization models, the present invention can reduce the average delay of vehicles in the direction of high traffic volume on the basis of maximizing the traffic capacity of the system, and meet the requirement of non-stopping in the direction of low traffic volume.

Description

technical field [0001] The invention belongs to the field of traffic safety control, and in particular relates to a method and device for coordinating urban arterial signal design under tidal traffic conditions based on LWR (Lighthill Whitham Richards) shock wave theory and a green wave bandwidth maximization model (maxband). Background technique [0002] The tidal traffic phenomenon often occurs on urban roads during the morning and evening peak hours, that is, the traffic volume in one direction of the urban arterial line is high and is in an oversaturated state, while the traffic volume in the other direction is low and is in an unsaturated state. The commonly used control strategy is to set variable lanes to balance the traffic demand in two directions, but setting variable lanes has relatively high requirements for the number of lanes in the two directions and the unbalanced degree of traffic flow, that is, during peak hours, the traffic flow of one side of the road sect...

AI Technical Summary

Problems solved by technology

Therefore, it can be considered that the adaptability of the existing technology to the coordinated control of the two-way signal of the arterial line in the oversaturated traffic state is insufficient

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